DocumentCode :
3782966
Title :
Accelerated frequency domain adaptive filter using modified DFT pair and its application to noise canceling
Author :
I. Nakanishi;Y. Itoh;Y. Fukui
Author_Institution :
Fac. of Educ. & Reg. Sci., Tottori Univ., Japan
Volume :
4
fYear :
2000
Firstpage :
361
Abstract :
The frequency domain adaptive filter (FDAF) converges faster than the time domain adaptive filter (TDAF) even when an input signal is colored since the input autocorrelation matrix is approximately diagonalized by using the discrete Fourier transform (DFT). The FDAF using the modified DFT pair (MDFTP) has been proposed to enable DFT operation in nonblock processing. This paper presents the introduction of the spectral error method into the FDAF using the MDFTP to accelerate its convergence speed. The effectiveness is examined through computer simulation in the adaptive line enhancer (ALE). Furthermore, it is applied to a noise canceling system for speech signals. The system based on the ALE requires one microphone; therefore, it is suitable for miniaturizing portable electronic equipment. The ability of noise canceling is confirmed through computer simulation using a speech signal.
Keywords :
"Acceleration","Frequency domain analysis","Adaptive filters","Discrete Fourier transforms","Computer simulation","Noise cancellation","Speech enhancement","Autocorrelation","Computer errors","Convergence"
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Print_ISBN :
0-7803-5482-6
Type :
conf
DOI :
10.1109/ISCAS.2000.858763
Filename :
858763
Link To Document :
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